Toothbrush And Device For Mounting And/Or Demounting A Toothbrush Head
The present invention provides a toothbrush and a device for attaching and/or detaching a toothbrush head. The toothbrush comprises a handle comprising a grip portion and a head attaching portion connected to the grip portion, a head comprising a body and bristles mounted to a first side of the body, the body further having a second side opposite to the first side, wherein a first hole is formed in one of the head attaching portion and the second side of the body, and a corresponding protruding plug is formed on the other of the head attaching portion and the second side of the body, the head is removably attached to the head attaching portion by inserting the protruding plug into the first hole. According to the present invention, the handle can be reused to improve resource utilization and reduce the amount of waste to be treated, as well as to enable the attachment and/or detachment of the head to be labor-savingly, easily and efficiently conducted.
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The present invention relates to a toothbrush and a device for attaching and/or detaching a toothbrush head.
BACKGROUND OF THE INVENTIONAccording to dentists' recommendations, people should brush their teeth at least twice a day and replace their toothbrushes at least every three months. Thus, the consumption of toothbrushes worldwide is extremely high. When replacing a toothbrush, people usually replace the old one with a new one and dispose of the old toothbrush as waste. However, only the bristles on the head of the old toothbrush are not suitable for further use in brushing the teeth while the handle can continue to be used. Discarding the entire old toothbrush would result in a large waste of resources and a significant increase in the amount of waste to be treated.
Therefore, there is a need to improve the existing toothbrush.
SUMMARY OF THE INVENTIONIt is an object of the present invention to overcome at least one defect of above-mentioned existing toothbrushes and to provide an improved toothbrush that allows the handle to be reused when the bristles on the head are not suitable for further use in cleaning the teeth, in order to improve resource utilization and reduce the amount of waste to be treated.
A further object of the present invention is to provide a device for attaching and/or detaching a toothbrush head. This device enables a head to be easily attached to a handle and/or enables a head to be easily detached from a handle.
According to an aspect of the present invention, there is provided a toothbrush comprising:
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- a handle comprising a grip portion and a head attaching portion connected to the grip portion;
- a head comprising a body and bristles mounted to a first side of the body, the body further having a second side opposite to the first side;
- wherein a first hole is formed in one of the head attaching portion and the second side of the body, and a corresponding protruding plug is formed on the other of the head attaching portion and the second side of the body, the head is removably attached to the head attaching portion by inserting the protruding plug into the first hole.
In one embodiment, the first hole is a through hole formed in the head attaching portion and the protruding plug is formed on the second side of the body.
In one embodiment, four first holes are symmetrically distributed with respect to a longitudinal axis of the handle.
In one embodiment, the protruding plug comprises a root portion extending from the body and an end portion integral with the root portion but having an increased size, and an excised portion is formed in the protruding plug.
In one embodiment, the protruding plug comprises a root portion extending from the body and an end portion integral with the root portion but having an increased size, an excised portion is formed in the protruding plug, the first hole comprises a first portion corresponding to the root portion and a second portion corresponding to the end portion and having a larger size than the first portion.
In one embodiment, a radial size of the root portion is selected to be the same as or slightly smaller than a radial size of the first portion, and a radial size of the end portion is selected to be the same as or slightly smaller than a radial size of the second portion.
In one embodiment, a flange is formed around the periphery of the head attaching portion to define a concave space for accommodating the body, and the concave space has a size corresponding to the sizes of the body.
In one embodiment, the bristles comprise a first group of bristles arranged at the center of the body, a second group of bristles and a third group of bristles arranged symmetrically on either side of the first group of bristles along a longitudinal direction of the body, each group of bristles comprises a plurality of bristle clusters comprising a plurality of bristles combined together, the bristle clusters in the first group of bristles are arranged in a plurality of columns along the longitudinal direction of the body and separately apart from each other, each bristle cluster in the first group of bristles is arranged to be parallel to a plane passing through the longitudinal axis of the body and perpendicular to the first side, the bristle clusters in the second group of bristles and the third group of bristles are arranged in columns along the longitudinal axis of the body and separately from each other, each bristle cluster in the second group of bristles and the third group of bristles is arranged to be tilted outwardly with respect to the plane so that the gaps between the second group of bristles as well as the third group of bristles and the first group of bristles gradually increase in a direction along the plane away from the body.
In one embodiment, the second group of bristles and the third group of bristles each comprise at least two columns of bristle clusters, the column of bristle clusters in the at least two columns of bristle clusters away from the first group of bristles is tilted outwardly at a greater angle than the column of bristle clusters close to the first group of bristles.
In one embodiment, the bristles further comprise a fourth group of bristles arranged at the end of the body away from the handle, the fourth group of bristles comprises at least one column of bristle clusters arranged in an arc.
In one embodiment, each bristle cluster in the fourth group of bristles is arranged to be tilted outwardly with respect to the center of the arc.
In one embodiment, a second hole is further formed in and extends through the head attaching portion.
According to other aspect of the present invention, there is provided a device for attaching a toothbrush head which is used for attaching a head to a handle of a toothbrush as above-mentioned comprising:
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- a lower housing;
- an upper housing pivotally mounted to the lower housing; and
- a lining component disposed in the lower housing;
- wherein a head attaching cavity is formed in the lining component, a step for supporting an edge portion of the body is formed on an inner wall of the head attaching cavity, a protruding pressing portion is formed on a surface of the upper housing facing the lining component at a location corresponding to the head attaching cavity, the pressing portion can apply a force onto the head attaching portion to insert the protruding plug into the first hole when the head is supported in the head attaching cavity by the step and the protruding plug aligns with the first hole.
In one embodiment, the lining component is further formed with a recess opening to the head attaching cavity and for accommodating a portion of the handle.
In one embodiment, the lining component is further formed with a cleaning brush accommodating cavity.
In one embodiment, the lining component is further formed with a head accommodating cavity for accommodating a spare head.
In one embodiment, the lining component is formed separately from the lower housing and is mounted to the lower housing.
According to other aspect of the present invention, there is provided a device for detaching a toothbrush head which is used for detaching a head from a handle of a toothbrush as above-mentioned, a second hole being formed in and extending through the head attaching portion, the device comprising:
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- a lower housing;
- an upper housing pivotally mounted to the lower housing; and
- a lining component disposed in the lower housing;
- wherein a head detaching cavity is formed in the lining component, a step for supporting the handle is formed on the inner wall of the head detaching cavity, a protruding pushing post is formed on a surface of the upper housing facing the lining component at a location corresponding to the head detaching cavity, the pushing post passing through the second hole can apply a force onto the body to disengage the protruding plug from the first hole when the head attached to the handle is placed in the head detaching cavity and the handle is supported by the step.
In one embodiment, the lining component is further formed with a recess opening to the head detaching cavity and for accommodating a portion of the handle.
According to further aspect of the present invention, there is provided a device for attaching and detaching a toothbrush head which is used for attaching a head to a handle or detaching the head from the handle of a toothbrush as above-mentioned, a second hole being formed in and extending through the head attaching portion, the device comprising:
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- a lower housing;
- an upper housing pivotally mounted to the lower housing; and
- a lining component disposed in the lower housing;
- wherein a head attaching cavity is formed in the lining component, a step for supporting an edge portion of the body is formed on an inner wall of the head attaching cavity, a protruding pressing portion is formed on a surface of the upper housing facing the lining component at a location corresponding to the head attaching cavity, the pressing portion can apply a force onto the head attaching portion to insert the protruding plug into the first hole when the head is supported in the head attaching cavity by the step and the protruding plug aligns with the first hole; and
- a head detaching cavity is formed in the lining component, a step for supporting the handle is formed on the inner wall of the head detaching cavity, a protruding pushing post is formed on the surface of the upper housing facing the lining component at a location corresponding to the head detaching cavity, the pushing post passing through the second hole can apply a force onto the body to disengage the protruding plug from the first hole when the head attached to the handle is placed in the head detaching cavity and the handle is supported by the step.
The toothbrush according to the present invention makes it possible to reuse the handle in order to improve resource utilization and reduce the amount of waste to be treated.
The device for attaching and/or detaching the toothbrush head according to the present invention enables the attachment and/or detachment of the head to be labor-savingly, easily and efficiently conducted.
Preferred embodiments of the present invention are described in detail below in connection with examples. It should be understood by those skilled in the art that these exemplary embodiments are not meant to form any limit to the present invention.
Second holes 9 may be further formed in and extend through the head attaching portion 3b. Although in the preferred embodiment the second holes 9 are shown to be three and are distributed along the longitudinal axis AA of the toothbrush, it should be understood that the number of second holes 9 may be less than three, e.g., two or even one. Of course, the number of the second holes 9 may be more than three. As required, the second holes may be distributed in other ways.
The head 5 can be reliably attached to the head attaching portion 3b of the handle 3 by forming a tight fit between the protruding plug 15 and the first hole 7. However, in order to facilitate easier attachment of the head 5 to and detachment from the handle 3, as shown in
In order to easily align the protruding plugs 15 on the head 5 with the corresponding first holes 7 in the head attaching portion 3b when the head 5 is attached to the handle 3, a flange 3c is formed around the periphery of the head attaching portion 3b of the handle 3 to define a concave space 3d for accommodating the body 11. The size of the concave space 3d corresponds substantially to the size of the body 11. In this way, the protruding plugs 15 on the head 5 align with the corresponding first holes 7 in the head attaching portion 3b when the body 11 is positioned in the concave space 3d. Furthermore, the size of the concave space 3d corresponding substantially to the size of the body 11 makes a gap between the head attaching portion 3b and the body 11 as small as possible to prevent or minimize dirt or moisture trapped between the head attaching portion 3b and the body 11.
As shown in
Although the head can be detached from the handle by means of a tool passing directly through the second holes 9 in the handle, a specific device 20 for attaching and detaching the head is proposed in the present invention. As shown in
The lining component 25 is also formed with a head detaching cavity 31 to accommodate the head attached to the handle and a portion of the handle. Steps 31a are formed on the inner wall of the head detaching cavity 31. In the preferred embodiment, the steps 31a are formed at the longitudinal ends of the head detaching cavity 31, but it should be understood that it is also feasible that the steps 31a are formed at both longitudinal sides of the head detaching cavity 31. As shown in
The lining component 25 may also formed with a cleaning brush accommodating cavity 35 for accommodating a cleaning brush 37. The cleaning brush 37 may be used to clean the toothbrush, in particular, to remove dirt that may be trapped between the head 5 and the handle 3. In the preferred embodiment, the cleaning brush accommodating cavity 35 is formed between the head attaching cavity 27 and the head detaching cavity 31, but it should be understood that the cleaning brush accommodating cavity 35 may be formed at other locations, for example, at the end side of the head attaching cavity 27 and the head detaching cavity 31, as shown in
The lining component 25 may also formed with a head accommodating cavity 39 formed for accommodating a spare head 5. Through holes 41 corresponding to the protruding plugs 15 on the body 11 may be formed in the bottom wall of the head accommodating cavity 39 to accommodate the protruding plug 15 on the body 11 so that the spare head 5 is securely placed in the head accommodating cavity 39. In the preferred embodiment, there are two head accommodating cavities 39 arranged on either side of the head attaching cavity 27 and the head detaching cavity 31 respectively, but it should be understood that the head accommodating cavity 39 may be more or less than two and may be arranged in other locations.
The lower housing 21 is formed with a boss 45 with a central cavity 43 and a projection 49 with a snap-in portion 47. A positioning post 51 and a projection 55 with an opening 53 are formed correspondingly on the bottom side of the lining component 25. By inserting the positioning post 51 on the bottom side of the lining component 25 into the central cavity 43 of the boss 45 on the lower housing 21, the lining component 25 can be quickly positioned relative to the lower housing 21. By further pressing the lining component 25 downwardly, the snap-in portion 47 of the projection 49 on the lower housing 21 can be received in the opening 53 of the projection 55 on the bottom side of the lining component 25, thereby reliably mounting the lining component 25 to the lower housing 21, as shown in
A protruding pressing portion 57 is formed on a surface of the upper housing 23 facing the lower housing 21 or the lining component 25 at a location corresponding to the head attaching cavity 27. In the preferred embodiment, the pressing portion 57 is formed in a hollow lattice shape, but it may be in other shapes as long as pressure can be applied to the handle by the pressing portion. Protruding pushing posts 59 are formed on the surface of the upper housing 23 facing the lower housing 21 or the lining component 25 at a location corresponding to the head detaching cavity 31. The number and position of the pushing posts 59 correspond to the number and position of the second holes 9 in the handle 3. The pushing posts 59 may pass freely through the second holes 9. In addition, locking means are formed on the lower housing 21 and the upper housing 23, for example a protrusion 61 formed on the lower housing 21 and a notch formed in the upper housing 23 to receive the protrusion 61, so as to reliably lock the lower housing 21 and the upper housing 23 together when the device 20 for attaching and detaching the head is not in use. The components of the device 20 for attaching and detaching the head may be substantially injection molded from a plastic material.
Further, it should be understood that the arrangement of bristles of the spare head stored in the head accommodating cavity is not limited to that shown in the preferred embodiment.
The device for attaching and detaching head according to the present invention allows the attachment and the detachment of the head to be labor-savingly, easily and efficiently conducted.
Although the present invention has been described in detail in connection with preferred embodiments, it should be understood that such detailed description is intended only to illustrate the present invention and does not constitute any limit to the present invention. For example, the protruding plugs may be formed on the handle and the holes for receiving the protruding plugs are formed in the body of the head. It is also feasible that the device for attaching and detaching the head do not include the head attaching cavity and the corresponding pressing portion or the head detaching cavity and the corresponding pushing posts. In this way, the device has only one function of the attachment and the detachment. Thus, the scope of the invention is defined by the technical solutions in the claims.
Claims
1. A device for attaching a toothbrush head to a toothbrush handle, the toothbrush head comprising a body and bristles mounted to the body, the toothbrush handle comprising a head attaching portion, the device comprising:
- a lower housing;
- an upper housing pivotally mounted to the lower housing; and
- a lining component disposed in the lower housing;
- wherein a head attaching cavity is formed in the lining component, wherein a step for supporting an edge portion of the body is formed on an inner wall of the head attaching cavity, wherein a protruding pressing portion is formed on a surface of the upper housing facing the lining component at a location corresponding to the head attaching cavity, and wherein the protruding pressing portion can apply a force onto the head attaching portion to attach the body to the head attaching portion.
2. The device for attaching the toothbrush head according to claim 1, wherein the lining component is further formed with a recess opening to the head attaching cavity and for accommodating a portion of the toothbrush handle.
3. The device for attaching the toothbrush head according to claim 1, wherein the lining component is further formed with a cleaning brush accommodating cavity.
4. The device for attaching the toothbrush head according to claim 1, wherein the lining component is further formed with a head accommodating cavity for accommodating a spare head.
5. The device for attaching the toothbrush head according to claim 1, wherein the lining component is formed separately from the lower housing and is mounted to the lower housing.
6. The device for attaching the toothbrush head according to claim 1, wherein the protruding pressing portion is formed in a hollow lattice shape.
7. A toothbrush kit comprising:
- the device for attaching the toothbrush head according to claim 1; and
- at least one of the toothbrush head and the toothbrush handle accommodated in the head attaching cavity.
8. A device for detaching a toothbrush head from a toothbrush handle, the toothbrush head comprising a body and bristles mounted to the body, the toothbrush handle comprising a head attaching portion, the body being attached to the head attaching portion, the device comprising:
- a lower housing;
- an upper housing pivotally mounted to the lower housing; and
- a lining component disposed in the lower housing;
- wherein a head detaching cavity is formed in the lining component, wherein a step for supporting the head attaching portion of the toothbrush handle is formed on an inner wall of the head detaching cavity, wherein a protruding pushing post is formed on a surface of the upper housing facing the lining component at a location corresponding to the head detaching cavity, and wherein the protruding pushing post can apply a force onto the body to detach the body from the head attaching portion.
9. The device for detaching the toothbrush head according to claim 8, wherein the lining component is further formed with a recess opening to the head detaching cavity and for accommodating a portion of the toothbrush handle.
10. The device for detaching the toothbrush head according to claim 8, wherein the lining component is further formed with a cleaning brush accommodating cavity.
11. The device for detaching the toothbrush head according to claim 8, wherein the lining component is further formed with a head accommodating cavity for accommodating a spare head.
12. The device for detaching the toothbrush head according to claim 8, wherein the lining component is formed separately from the lower housing and is mounted to the lower housing.
13. A toothbrush kit comprising:
- the device for detaching the toothbrush head according to claim 8; and
- at least one of the toothbrush head and the toothbrush handle accommodated in the head detaching cavity.
14. A device for attaching a toothbrush head to a toothbrush handle and detaching the toothbrush head from the toothbrush handle, the toothbrush head comprising a body and bristles mounted to the body, the toothbrush handle comprising a head attaching portion, the body being capable of attaching to the head attaching portion, the device comprising:
- a lower housing;
- an upper housing pivotally mounted to the lower housing; and
- a lining component disposed in the lower housing;
- wherein a head attaching cavity is formed in the lining component, wherein a step for supporting an edge portion of the body is formed on an inner wall of the head attaching cavity, wherein a protruding pressing portion is formed on a surface of the upper housing facing the lining component at a location corresponding to the head attaching cavity, wherein the protruding pressing portion can apply a force onto the head attaching portion to attach the body to the head attaching portion; and wherein a head detaching cavity is formed in the lining component, wherein a step for supporting the head attaching portion of the toothbrush handle is formed on the inner wall of the head detaching cavity, wherein a protruding pushing post is formed on the surface of the upper housing facing the lining component at a location corresponding to the head detaching cavity, and wherein the protruding pushing post can apply a force onto the body to detach the body from the head attaching portion.
15. The device for attaching the toothbrush head to the toothbrush handle and detaching the toothbrush head from the toothbrush handle according to claim 14, wherein the lining component is further formed with a recess opening to the head attaching cavity and for accommodating a portion of the toothbrush handle.
16. The device for attaching the toothbrush head to the toothbrush handle and detaching the toothbrush head from the toothbrush handle according to claim 14, wherein the lining component is further formed with a recess opening to the head detaching cavity and for accommodating a portion of the toothbrush handle.
17. The device for attaching the toothbrush head to the toothbrush handle and detaching the toothbrush head from the toothbrush handle according to claim 14, wherein the protruding pressing portion is formed in a hollow lattice shape.
18. The device for attaching the toothbrush head to the toothbrush handle and detaching the toothbrush head from the toothbrush handle according to claim 14, wherein the lining component is further formed with a cleaning brush accommodating cavity.
19. The device for attaching the toothbrush head to the toothbrush handle and detaching the toothbrush head from the toothbrush handle according to claim 14, wherein the lining component is further formed with a head accommodating cavity for accommodating a spare head.
20. The device for attaching the toothbrush head to the toothbrush handle and detaching the toothbrush head from the toothbrush handle according to claim 14, wherein the lining component is formed separately from the lower housing and is mounted to the lower housing.
21. A toothbrush kit comprising:
- the device for attaching the toothbrush head to the toothbrush handle and detaching the toothbrush head from the toothbrush handle according to claim 14;
- at least one of the toothbrush head and the toothbrush handle accommodated in the head attaching cavity; and
- at least one of the toothbrush head and the toothbrush handle accommodated in the head detaching cavity.
Type: Application
Filed: Jul 30, 2019
Publication Date: Mar 14, 2024
Applicant: World Wide Daily Holdings Company Limited (Kwai Chung N.T.)
Inventor: Chun Yuen To (Shatin New Territories)
Application Number: 17/607,116